docs: def sanitize_date(publication_date: str) -> str:
      """Sanitize lots of different date strings into ISO-8601."""
      if re1.search(publication_date):
          return datetime.strptime(publication_date, '%Y %b %d').strftime('%Y-%m-%d')
  
      if re2.search(publication_date):
          return datetime.strptime(publication_date, '%Y %b').strftime('%Y-%m-01')
  
      if re3.search(publication_date):
          return publication_date + "-01-01"
  
      if re4.search(publication_date):
          return datetime.strptime(publication_date[:-4], '%Y %b').strftime('%Y-%m-01')
  
      s = re5.search(publication_date)
  
      if s:
          year, season = s.groups()
          return '{}-{}-01'.format(year, season_map[season])
  
      s = re6.search(publication_date)
  
      if s:
          return datetime.strptime(publication_date, '%Y %b %d-{}'.format(s.groups()[0])).strftime('%Y-%m-%d')
  
      s = re7.search(publication_date)
  
      if s:
          return datetime.strptime(publication_date, '%Y %b %d-{}'.format(s.groups()[0])).strftime('%Y-%m-%d')